mirror of https://github.com/apache/kafka.git
22f7ffe5e1
The consumer refactoring project introduced another `Consumer` implementation, creating two different, coexisting implementations of the `Consumer` interface: * `KafkaConsumer` (AKA "existing", "legacy" consumer) * `PrototypeAsyncConsumer` (AKA "new", "refactored" consumer) The goal of this task is to refactor the code via the delegation pattern so that we can keep a top-level `KafkaConsumer` but then delegate to another implementation under the covers. There will be two delegates at first: * `LegacyKafkaConsumer` * `AsyncKafkaConsumer` `LegacyKafkaConsumer` is essentially a renamed `KafkaConsumer`. That implementation handles the existing group protocol. `AsyncKafkaConsumer` is renamed from `PrototypeAsyncConsumer` and will implement the new consumer group protocol from KIP-848. Both of those implementations will live in the `internals` sub-package to discourage their use. This task is part of the work to implement support for the new KIP-848 consumer group protocol. Reviewers: Philip Nee <pnee@confluent.io>, Andrew Schofield <aschofield@confluent.io>, David Jacot <djacot@confluent.io> |
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